I have it installed on my home computer network and I really like it so far.
I have been a Vista fan for a couple of years now and 7 is even better.
Microsoft has really dumbed down the whole network install with a system called HomeGroup. It only works with '7' computers but basically you install the OS and it instantly recognizes the other computers on the network and configures the sharing and permissions depending on how you answer a couple of questions.
Check out this link for some other cool features.
http://www.sevenforums.com/news/22625-18-cool-things-windows-7-does-vista-doesnt.html